Wiriyanusorn, S., & Lynch, R. (2019). A Comparative-Correlational Study of Years 4 to 6 and Years 7 to 9 Non- Thai Students’ Motivation and Orientation of Motivation Toward Learning Thai at an International School in Bangkok, Thailand. Scholar: Human Sciences, 11(1), 227. Retrieved from http://www.assumptionjournal.au.edu/index.php/Scholar/article/view/3308